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Figure 1: (a and b) Computerized tomography scans of the abdomen showing a subdiaphragmatic mass (shown with arrow). (c) Endoscopic ultrasound image showing the needle within the mass. (d) Clusters of polygonal cells with distinct borders, smooth nuclear contours, and abundant cytoplasm containing pigment (Diff-Quik, 40). (e) Cell block showing hepatic tissue with portal tracts (H and E, 20). (f) Hepatic tissue confirmed by arginase-1 immunostain

Figure 1: (a and b) Computerized tomography scans of the abdomen showing a subdiaphragmatic mass (shown with arrow). (c) Endoscopic ultrasound image showing the needle within the mass. (d) Clusters of polygonal cells with distinct borders, smooth nuclear contours, and abundant cytoplasm containing pigment (Diff-Quik, 40). (e) Cell block showing hepatic tissue with portal tracts (H and E, 20). (f) Hepatic tissue confirmed by arginase-1 immunostain